A student researcher works at ski resort. For a student project, they would like to know whether the proportion of skiers on a particular day is about the same as the proportion of snowboarders. They take a stratified random sample, looking at each of the 3 chair lifts and randomly selecting every other chair of people to mark whether they are a skier (1) or a snowboarder (0). Which test is most appropriate to test whether the proportion of skiers is not 0.50?